Magnetism, magnetic poles, magnetic domains, turbine, electromagnet, repel, commutator, generator, electromagnetic induction, alternating current, direct current, galvanometer, transformer, electric motor The regions on a magnet where the magnetic force is strongest are called ______. The south pole of a magnet will ______ the south pole of another magnet. A device that uses an electromagnet to measure electric current is a(n) ______. A device used to increase or decrease the voltage of current in a power line is a(n) ______. A switch that regularly reverses the current in some motors is a ___. Current that flows in only one direction through a wire is called A large wheel that rotates when pushed by water, wind, or steam. When current in a circuit reverses its direction in a regular pattern, it is called ______. The properties and interactions of magnets are referred to Groups of aligned atoms in a magnet are called A(n) ______ is formed by placing a piece of iron inside a current-carrying coil of wire A machine that changes electrical energy to mechanical energy is a(n) ______ used to do work, such as turning a fan. A device that produces an electric current by rotating a coil of wire in a magnetic field is a(n) ______. The process by which moving a wire through a magnetic field produces an electric current is ______. What is the function of each of these devices